What will be available to do on Sunday Nov 1st? What will be open? Restaurants? Shops? Anything?
This kind of question is difficult for us, on this forum, to answer--because most of us have not been to the place you're asking about on the holiday you're inquiring about.You might get more information by going to tripadvisor.com or one of the other travel forums that have destination experts who reside in the city/country you're asking about.
I was in Venice 2 years ago on All Saints day.The only problem we had was the car rental at Pizzale Roma was only open 9-12>We then went to Lake Como and had no problems.